linux.git/include/linux/sunrpc/xprt.h, branch v2.6.15

SUNRPC: Provide a callback to allow free pages allocated during xdr encoding

2005-10-19T06:19:43+00:00

 For privacy, we need to allocate pages to store the encrypted data (passed
 in pages can't be used without the risk of corrupting data in the page cache).
 So we need a way to free that memory after the request has been transmitted.

 Signed-off-by: J. Bruce Fields 
 Signed-off-by: Trond Myklebust

RPC: allow call_encode() to delay transmission of an RPC call.

2005-10-18T21:20:11+00:00

 Currently, call_encode will cause the entire RPC call to abort if it returns
 an error. This is unnecessarily rigid, and gets in the way of attempts
 to allow the NFSv4 layer to order RPC calls that carry sequence ids.

 Signed-off-by: Trond Myklebust

[PATCH] RPC: rationalize set_buffer_size

2005-09-23T16:38:55+00:00

 In fact, ->set_buffer_size should be completely functionless for non-UDP.

 Test-plan:
 Check socket buffer size on UDP sockets over time.

 Signed-off-by: Chuck Lever 
 Signed-off-by: Trond Myklebust

[PATCH] RPC: parametrize various transport connect timeouts

2005-09-23T16:38:53+00:00

 Each transport implementation can now set unique bind, connect,
 reestablishment, and idle timeout values.  These are variables,
 allowing the values to be modified dynamically.  This permits
 exponential backoff of any of these values, for instance.

 As an example, we implement exponential backoff for the connection
 reestablishment timeout.

 Test-plan:
 Destructive testing (unplugging the network temporarily).  Connectathon
 with UDP and TCP.

 Signed-off-by: Chuck Lever 
 Signed-off-by: Trond Myklebust

[PATCH] RPC: allow RPC client's port range to be adjustable

2005-09-23T16:38:50+00:00

 Select an RPC client source port between 650 and 1023 instead of between
 1 and 800.  The old range conflicts with a number of network services.
 Provide sysctls to allow admins to select a different port range.

 Note that this doesn't affect user-level RPC library behavior, which
 still uses 1 to 800.

 Based on a suggestion by Olaf Kirch .

 Test-plan:
 Repeated mount and unmount.  Destructive testing.  Idle timeouts.

 Signed-off-by: Chuck Lever 
 Signed-off-by: Trond Myklebust

[PATCH] RPC: clean up after nocong was removed

2005-09-23T16:38:48+00:00

 Clean-up:  Move some macros that are specific to the Van Jacobson
 implementation into xprt.c.  Get rid of the cong_wait field in
 rpc_xprt, which is no longer used.  Get rid of xprt_clear_backlog.

 Test-plan:
 Compile with CONFIG_NFS enabled.

 Signed-off-by: Chuck Lever 
 Signed-off-by: Trond Myklebust

[PATCH] RPC: remove xprt->nocong

2005-09-23T16:38:47+00:00

 Get rid of the "xprt->nocong" variable.

 Test-plan:
 Use WAN simulation to cause sporadic bursty packet loss with UDP mounts.
 Look for significant regression in performance or client stability.

 Signed-off-by: Chuck Lever 
 Signed-off-by: Trond Myklebust

[PATCH] RPC: add a release_rqst callout to the RPC transport switch

2005-09-23T16:38:45+00:00

 The final place where congestion control state is adjusted is in
 xprt_release, where each request is finally released.  Add a callout
 there to allow transports to perform additional processing when a
 request is about to be released.

 Test-plan:
 Use WAN simulation to cause sporadic bursty packet loss.  Look for significant
 regression in performance or client stability.

 Signed-off-by: Chuck Lever 
 Signed-off-by: Trond Myklebust

[PATCH] RPC: add generic interface for adjusting the congestion window

2005-09-23T16:38:43+00:00

 A new interface that allows transports to adjust their congestion window
 using the Van Jacobson implementation in xprt.c is provided.

 Test-plan:
 Use WAN simulation to cause sporadic bursty packet loss.  Look for
 significant regression in performance or client stability.

 Signed-off-by: Chuck Lever 
 Signed-off-by: Trond Myklebust

[PATCH] RPC: separate xprt_timer implementations

2005-09-23T16:38:41+00:00

 Allow transports to hook the retransmit timer interrupt.  Some transports
 calculate their congestion window here so that a retransmit timeout has
 immediate effect on the congestion window.

 Test-plan:
 Use WAN simulation to cause sporadic bursty packet loss.  Look for significant
 regression in performance or client stability.

 Signed-off-by: Chuck Lever 
 Signed-off-by: Trond Myklebust